<?php
	class ConnManger{
		//数据库变量声明
		private $step;
		//构造函数
		public function ConnManger($db_conf,$mem_conf){
			if (array_key_exists('step', $db_conf)){
				$this->step = $db_conf['step'];
			}
		}
		//连接获取函数
		public function getConn_step(){
			$connDb = new ConnDb($this->step);
			$db = $connDb->getConn();
			return $connDb;
		}
	}
?>